android安卓app开发教程之生成二维码,解析识别二维码.zip

Android之二维码的生成与解析 直接上代码，代码上面有具体的解析，并且提供jar供下载：二维码Jar包.rar 根据文本生成对应的二维码： 复制代码 // 生成QR图 private void createImage() { try { // 需要引入core包 QRCodeWriter writer = new QRCodeWriter(); String text = qr_text.getText().toString(); Log.i(TAG, "生成的文本：" + text); if (text == null || "".equals(text) || text.length() < 1) { return; } // 把输入的文本转为二维码 BitMatrix martix = writer.encode(text, BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT); System.out.println("w:" + martix.getWidth() + "h:" + martix.getHeight()); Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints); int[] pixels = new int[QR_WIDTH * QR_HEIGHT]; for (int y = 0; y < QR_HEIGHT; y++) { for (int x = 0; x < QR_WIDTH; x++) { if (bitMatrix.get(x, y)) { pixels[y * QR_WIDTH + x] = 0xff000000; } else { pixels[y * QR_WIDTH + x] = 0xffffffff; } } } Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT, Bitmap.Config.ARGB_8888); bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT); qr_image.setImageBitmap(bitmap); } catch (WriterException e) { e.printStackTrace(); } } 复制代码 根据二维码图片读取内容： 复制代码 // 解析QR图片 private void scanningImage() { Map<DecodeHintType, String> hints = new HashMap<DecodeHintType, String>(); hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); // 获得待解析的图片 Bitmap bitmap = ((BitmapDrawable) qr_image.getDrawable()).getBitmap(); RGBLuminanceSource source = new RGBLuminanceSource(bitmap); BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source)); QRCodeReader reader = new QRCodeReader(); Result result; try { result = reader.decode(bitmap1, hints); // 得到解析后的文字 qr_result.setText(result.getText()); } catch (NotFoundException e) { e.printStackTrace(); } catch (ChecksumException e) { e.printStackTrace(); } catch (FormatException e) { e.printStackTrace(); } }